SPIGOT-2481: Implement EnchantmentTarget.BREAKABLE

src/main/java/org/bukkit/craftbukkit/enchantments/CraftEnchantment.java

@@ -47,6 +47,8 @@ public class CraftEnchantment extends Enchantment {
             return EnchantmentTarget.BOW;
         case FISHING_ROD:
             return EnchantmentTarget.FISHING_ROD;
+        case BREAKABLE:
+            return EnchantmentTarget.BREAKABLE;
         default:
             return null;
         }

src/test/java/org/bukkit/PerMaterialTest.java

@@ -27,6 +27,7 @@ import java.util.Map;
 import net.minecraft.server.Block;
 import net.minecraft.server.Blocks;
 import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+import org.bukkit.enchantments.EnchantmentTarget;
 
 @RunWith(Parameterized.class)
 public class PerMaterialTest extends AbstractTestingBase {
@@ -146,4 +147,13 @@ public class PerMaterialTest extends AbstractTestingBase {
             assertFalse(material.hasGravity());
         }
     }
+
+    @Test
+    public void usesDurability() {
+        if (!material.isBlock()) {
+            assertThat(EnchantmentTarget.BREAKABLE.includes(material), is(CraftMagicNumbers.getItem(material).usesDurability()));
+        } else {
+            assertFalse(EnchantmentTarget.BREAKABLE.includes(material));
+        }
+    }
 }